diff options
Diffstat (limited to '')
| -rw-r--r-- | third_party/heimdal/cf/broken-snprintf.m4 | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/heimdal/cf/broken-snprintf.m4 b/third_party/heimdal/cf/broken-snprintf.m4 new file mode 100644 index 0000000..0261116 --- /dev/null +++ b/third_party/heimdal/cf/broken-snprintf.m4 @@ -0,0 +1,63 @@ +dnl $Id$ +dnl +AC_DEFUN([AC_BROKEN_SNPRINTF], [ +AC_CACHE_CHECK(for working snprintf,ac_cv_func_snprintf_working, +ac_cv_func_snprintf_working=yes +AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <string.h> +int main(int argc, char **argv) +{ + char foo[[3]]; + snprintf(foo, 2, "12"); + return strcmp(foo, "1") || snprintf(NULL, 0, "%d", 12) != 2; +}]])],[:],[ac_cv_func_snprintf_working=no],[:])) + +if test "$ac_cv_func_snprintf_working" = yes; then + AC_DEFINE_UNQUOTED(HAVE_SNPRINTF, 1, [define if you have a working snprintf]) +fi +if test "$ac_cv_func_snprintf_working" = yes; then +AC_NEED_PROTO([#include <stdio.h>],snprintf) +fi +]) + +AC_DEFUN([AC_BROKEN_VSNPRINTF],[ +AC_CACHE_CHECK(for working vsnprintf,ac_cv_func_vsnprintf_working, +ac_cv_func_vsnprintf_working=yes +AC_RUN_IFELSE([AC_LANG_SOURCE([[ +#include <stdio.h> +#include <string.h> +#include <stdarg.h> + +int foo(int num, ...) +{ + char bar[[3]]; + va_list arg; + va_start(arg, num); + vsnprintf(bar, 2, "%s", arg); + va_end(arg); + return strcmp(bar, "1"); +} + +int bar(int num, int len, ...) +{ + int r; + va_list arg; + va_start(arg, len); + r = vsnprintf(NULL, 0, "%s", arg); + va_end(arg); + return r != len; +} + +int main(int argc, char **argv) +{ + return foo(0, "12") || bar(0, 2, "12"); +}]])],[:],[ac_cv_func_vsnprintf_working=no],[:])) + +if test "$ac_cv_func_vsnprintf_working" = yes; then + AC_DEFINE_UNQUOTED(HAVE_VSNPRINTF, 1, [define if you have a working vsnprintf]) +fi +if test "$ac_cv_func_vsnprintf_working" = yes; then +AC_NEED_PROTO([#include <stdio.h>],vsnprintf) +fi +]) |